IPC분류정보
국가/구분 |
United States(US) Patent
등록
|
국제특허분류(IPC7판) |
|
출원번호 |
US-0368639
(2003-02-20)
|
발명자
/ 주소 |
|
출원인 / 주소 |
- General Signal UK Limited
|
대리인 / 주소 |
|
인용정보 |
피인용 횟수 :
3 인용 특허 :
2 |
초록
▼
A closure apparatus comprises a collar 2 having a collar periphery and having a collar inner surface defining an opening 3, a closure 10, having a closure periphery, said closure 10 being for closing said opening 3, a bearing structure 7 being located around said collar periphery or said closure per
A closure apparatus comprises a collar 2 having a collar periphery and having a collar inner surface defining an opening 3, a closure 10, having a closure periphery, said closure 10 being for closing said opening 3, a bearing structure 7 being located around said collar periphery or said closure periphery, a locking ring 18 being mounted for rotation with respect to said closure 10 and said opening 3 on said bearing structure 7, so that said locking ring 18 is rotatable between a locking position for locking said closure 10 to said opening 3 and an unlocked position for permitting said closure 10 to be moved away from said opening 3.
대표청구항
▼
1. Closure apparatus, comprising:a collar having a collar periphery and having a collar inner surface defining an opening, a closure, having a closure periphery, said closure being for closing said opening, a bearing structure being located around said collar periphery or said closure periphery, a l
1. Closure apparatus, comprising:a collar having a collar periphery and having a collar inner surface defining an opening, a closure, having a closure periphery, said closure being for closing said opening, a bearing structure being located around said collar periphery or said closure periphery, a locking ring being mounted for rotation with respect to said closure and said opening on said bearing structure, so that said locking ring is rotatable between a locking position for locking said closure to said opening and an unlocked position for permitting said closure to be moved away from said opening, wherein said closure is mounted an a closure carriage, said closure carriage comprising a closure grip for releasably engaging said closure, and wherein said closure grip comprises at least two closure grip parts and said closure comprises at least one closure grip mount, a closure grip part drive being provided for driving the first and second closure grip parts to engage said closure grip mount. 2. The closure apparatus of claim 1, wherein said collar has a collar inner surface defining an opening and a collar outer surface, and at least one first engagement formation formed on said collar outer surface, said closure has a closure outer surface, at least one second engagement formation being formed on said closure outer surface, said locking ring has a locking ring inner surface and at least one third and at least one fourth engagement formation formed on said locking ring inner surface, said locking ring being rotatably mounted with respect to said collar and said closure, between a locked position and an unlocked position, said closure closing said opening in a closed position and being spaced away from said opening in an open position, said locking ring being configured so that said third engagement formation engages one of said first and second engagement formations, and so that, in said locked position, said fourth engagement formation is engaged with the other of said first and second engagement portions, to hold said closure in said closed position, and in said unlocked position, said fourth engagement formation is spaced apart from said other of said first and second engagement portions to permit said closure to be moved into said open position.3. A closure apparatus according to claim 2, wherein at least one of said third engagement formation and said one of said first and second engagement formations engaged by said third engagement formation comprises a substantially continuous annular surface against which the other of said third engagement formation or said one of said first or second engagement formations is slidably mounted.4. A closure apparatus according to claim 1, wherein said locking ring is rotatably mounted on said collar and said fourth engagement formation is engageable with said second engagement formation of said closure in said locked position, said fourth engagement formation being spaced apart from said second engagement formation in said unlocked angular position to permit said closure to be moved into said open position.5. A closure apparatus according to claim 2, wherein said fourth engagement formation comprises at least four engagement parts projecting from said locking ring inner surface, said engagement parts being spaced apart from one another by clear sections, said other of said first and second engagement formations comprising the same number of engagement parts as are formed on said locking ring, spaced apart by clear sections, said engagement parts and clear sections being configured so that, in said unlocked position, said engagement parts can pass through said clear sections.6. A closure apparatus according to claim 1, further comprising a drive for driving said locking ring to rotate between said locked position and said unlocked position.7. A closure apparatus according to claim 6, wherein said locking ring comprises at least one drive formation and said drive comprises at least one drive part engageable with said drive formation, said drive part being reciprocable between a first drive position corresponding to said locked position and a second drive position corresponding to said unlocked position.8. Closure apparatus according to claim 1, wherein said bearing structure is mounted on one of said collar and said closure, at least one of said locking ring and said one of said collar or said closure comprising a substantially continuous annular bearing surface, and the other of said locking ring and said one of said closure or collar comprising bearing pieces slidably contacting said annular surface.9. Closure apparatus according to claim 8, wherein said bearing pieces each comprise an adjustment to allow them to be adjusted in a radial direction towards or away from said annular bearing surface.10. Closure apparatus according to claim 1, further comprising safety locking means having a latched position and an unlatched position, the safety locking means preventing said locking ring from rotating from said locked position to said unlocked position in said latched position and permitting said locking ring to be rotated from said locked position to said unlocked position in said unlatched position.11. Closure apparatus according to claim 10, wherein said safety locking means comprises at least one first latching formation on at least one of said closure and said collar and at least one second latching formation on said locking ring and at least one latching member for engaging said first latching formation and said second latching formation in said latching position to prevent relative movement thereof.12. Closure apparatus according to claim 1, wherein said collar has an axial direction, said closure being movable between a closed position and an open position along said axial direction, a closure drive being provided for driving said closure along said axis between said closed and open positions.13. Closure apparatus according to claim 12, wherein said closure is mounted on a closure carriage comprising a closure slide for moving said closure in said axial direction and a closure hinge to allow said closure to move from said open position to a distant position angularly displaced from said open position.wherein said closure is mounted on a closure carriage, said closure carriage comprising a closure grip for releasably engaging said closure, and wherein said closure grip comprises at least two closure grip parts and said closure comprises at least one closure grip mount, a closure grip part drive being provided for driving the first and second closure grip parts to engage said closure grip mount. 14. Closure apparatus according to claim 1, wherein said closure has a weight in excess of 20 kg.15. A method of closing an opening formed in a collar, comprising: moving a closure from an open position to a closed position, said closure closing said opening in said closed position, and said closure comprising:a collar having a collar periphery and having a collar inner surface defining an opening, a closure periphery, said closure being for closing said opening, a bearing structure being located around said collar periphery or said closure periphery, a locking ring being mounted for rotation with respect to said closure and said opening on said bearing structure, so that said locking ring is rotatable between a locking position for locking said closure to said opening and an unlocked position for permitting said closure to be moved away from said opening; and rotating the locking ring from an unlocked position to a locked position, wherein said collar has a collar outer surface and at least one engagement formation formed on said collar outer surface, said closure having a closure outer surface with at least one second engagement formation formed on said closure outer surface, said locking ring having a locking ring inner surface and at least one third engagement formation and at least one fourth engagement formation formed on said locking ring inner surface, said locking ring being configured so that said third engagement formation engages one of said first and second engagement formations in said locked position to hold said closure in said closed position and so that in said unlocked position, said fourth engagement formation is spaced apart from said other of said first and second engagement portions, to permit said closure to be moved into said open position, wherein said closure is mounted on a closure carriage, said closure carriage comprising a closure grip for releasably engaging said closure, and wherein said closure grip comprises at least two closure grip parts and said closure comprises at least one closure grip mount, a closure grip part drive being provided for driving the first and second closure grip parts to engage said closure grip mount.
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